Drain assembly



E, A. POPE DRIN ASSEMBLY May 5, 1942.

Filed Sept. 5., 1940 2 Sheets-Sheet l E. A. POPE DRAIN ASSEMBLY May 5, 1942.

2 Sheets-Sheet 2 Filed Sept. 3, 1940 Patented May s, 1942 DRAIN ASSEMIBLY` Elton A. Pope, Waterbury, Conn., -assignor to Chase Brass & Copper Co. Incorporated, Waterbury, Conn., a corporation Application September 3, 1940, Serial No. 355,108

4 Claims.

The present invention relates to improvements in drain-assemblies for lavatories, sinks, washtrays, etc., and relates more particularly to improvements in drain-assemblies which are provided with a mechanically-operated stopper forming a permanent normal Ypart of the assembly.

One of the objects of the present invention is to provide a superior drain-assembly of the character referred to which may be produced at a low Vcost for manufacture and which may be relied upon to discharge its functions over long periods of use and without derangement of its relatively-movable parts.

Another object of the present invention is to provide a drain-assembly having a mechanically-operable plug or stopper and characterized by superior means for guiding the said stopper in its movements into and out .of its drain-closing position.

A further object of the present invention is to provide a drain-assembly of the character referred to and which is characterized by a superior construction and arrangement of parts whereby the stopper or plug may be properly guided in its movements without unduly restricting the flow of waste through the drain passage of the assembly.

With the above and other objects vin view, as will appear to ythose skilled in the art from the present disclosure, this invention includes all features in the said disclosure which are novel over the prior art and which are not claimed in any separate application.

'In the accompanying drawings, in which certain modes of carrying out the present invention are shown for illustrative purposes:

Fig. 1 is a broken view in Vertical centrallongitudinal section of a drain-assembly embodying the present invention and shown as installed in a lavatory-bowl and connected to a waste pipe;

Fig. 2 is a view in side elevation of the drainhead detached;

Fig. 3 is a top or planview thereof;

Fig. 4 is a View in Vertical central-longitudinal section taken on the line 4--4 of Fig. 3;

Fig. 5 is a similar view but taken on the line 5-5 of Fig. 3;

Fig. 6 is a transverse sectional view taken on the line 6-6 of Fig. 5;

Fig. 7 is a perspective view of the tubular drain-head with `portions thereof broken away and shown :in section;

Fig. 8 is a vertical central-longitudinal view corresponding to Fig. 1 but showing another form which the present invention may assume;

Fig. 9 is a transverse sectional View through the drain-head taken on the line 9 9 of Fig. `8 and omitting the other elements;

Fig. 10 is a perspective View of the drainhead of Figs. 8, 9 and 11 with portions thereof broken Yaway and shown in section; and

Fig. 11 is a view of the tubular drain-head of Figs. 8,9 and 10 shown partly in side elevation and partly in vertical central-longitudinal section but viewing the said drain-headv from a, right angle to the position in which it isshown in Fig. 8.

The structure of Figs. 1 to 7, inclusive The drain-assembly shown in the figures now under consideration includes a body I5 having a threaded aperture I6 in its lower wall for the threaded reception of a waste-pipe I'I which may lead to any suitable waste-receiving sys,- tem. Formed in the upper wall of thebody I5 in axial alignment with the threaded aperture I6 is a threaded aperture I8 communicating with the chamber I@ Within the said body I5 and having at its lower end an inwardly-projecting annular stop-fiange 20. The body I5 of the drain-assembly is also provided with a horizontally-offsetting neck 2l communicating with the chamber vI9 in the said body as is clearly shown in Fig. 1 and for purposes as will hereinafter appear. i

Threaded into the upper aperture I8 in the body I 5 is the externally-threaded lower portio of a tubular drain-head 22 having its lower end provided with an integral inwardly-projecting annular flange 23. The under face of the annular ilange 23 just referred to, seats against a compressible ring-like gasket 24 having its under face, in turn, seated against the upper face of the stop-flange 2D of the body I5.

The upper end of the tubular drain-head 22 is formed with an vintegral outwardly-extending ared ange 25 having its under face seated against the upper face of the bottom wall of a lavatory-bowl 2'6 immediately around a Ver-r tical drain-passage 21 formed in the lavatorythe lower terminus of the vertical drain-passage 21 therein.

In its upper portion the tubular drain-head 22 is formed with a conically-contoured stopperseat 3l 'adapted to be engaged by the conicallycontoured periphery of a disc-like stopper-headv or plug 32 having a rigid depending stem 33 ex-` tending downwardly from the said stopper-head centrally through the interior of the drain-head 22 and into the chamber I9 in the body I5. The lower end of the stem 33 is iiattened as shownfff in Fig. l and is provided with a transverse aperture 34 freely receiving the inner end of a horij f The said operating-lever 35 extends outwardly from the` zontal rod-like operating-lever 35.

chamber I9 in the body I5 through the neck 2l thereof and thence outwardly beyond the said neck for connection to any suitable manual operating means for eecting the raising and low-v ering of the stopper-head 32 with respect tov the stopper-seat 3I.

Intermediate its ends the operating-lever 35 is provided with a spherically-contoured ball-like trunnion 36 having its inner portion seated against aresilient seat-member 31 formed of rubber or other suitable resilient sealing material. The said seat-member 31 is mounted in anoutwardly-opening counter-bore 38 formed in the outer portion of the neck 2| of the body I5. The ball-like trunnion 36 of the operating-lever` 3511s held in watertightI seated engagement with the resilient seat-member 31 by means of a helicalr spring 39 pressing at its inner end against the outer portion of the said trunnion. The outer gportion of thesaid helical spring 39 presses in turn against an annular inwardly-'propecting flange 40 formed at the outer end of a substantially-tubular retaining-cap 4I provided with internal threads for threaded engagement with external threads upon the outer end of the neck 2| of the body I5, all as shown in Fig. 1.

Registering with the overiiow-passage 28 in the lavatory-bowl 26 are two arcuate overflowreceiving openings 42-42 respectively formed at diametrically-opposite points in the cylindrically-contoured side Wall of the tubular drain-head 22.

For the purpose of providing guiding means for guiding the vertical reciprocation of the stem 33 of the stopper 32, the tubular drain-head 22 is formed with two upper radially-extending guide-fingers 43-43 respectively formed inte-L gral with and inwardly-projecting from the upper `edges of the respective overiiow-receiving openings 42-42 in the said drain-head. Also for purposes of guiding the stem 33 the said drainhead is' formed with two Ylower guide-fingers y44--44 each formed integral at its outer ends with the material constituting the lower edge of the adjacent one of thesaid overow-receiving openings 42-42 in the drain-head and projecting linwardly toward each other as shown inthe drawings. Y

The guide-fingers 43-43 and 44-44 may be conveniently formed of material displaced in the process of forming the waste-receiving openings 42-42 in the drain-head 22 as is indicated by the broken lines 43a and 44a in Fig. 2.

Each of the guide-fingers 43-43 and 44-44 is formed in its inner edge with an arcuate notch 45 shaped to substantially conform to the transverse curvature of the stem 33 of the stopperhead 32 and providing, together with the similar notch of the horizontally-aligned opposed guidefinger, a guide-way which substantially encircles the said stem 33.

The fit between the periphery of the stem 33 of the stopper-head 32 and the surfaces of the notches 45 in the guide-fingers 43-'-43 and IMI- 44, is a free sliding fit just sufficiently close to ensure that the said stopper 32 will be guided into approximate registration with the stopper- `seat 3l.

' 'By forming the guide-fingers 43-53 and 44-44 ror their equivalent, integral with the drain-head a degree of rigidity is secured which Y is otherwise unattainable except by the employment of cumbersome and costly inserts, which latter, in addition to adding to the cost of the structure, are very ap-t to obstruct a greater portion of the cross-sectional area of the tubular passage through the drain-head than is the. case with the integral guide-means-referred to.L

The structure of Figs. 8 tollpin'clusioe Y In the figures now under consideration there is shown a tubular drain-head 46 substantiallyl conforming to the drain-head 22 before referred to, and like the same,v provided at its upper end with a ange 41 resting upon the upper face of the bottom wall of a lavatory-bowl 48. The said drain-head 46 extends downwardly through a vertical drain-passage 49 in the lavatory-bowl 48 and has applied to its exteriorly-threaded low- 35 er portion aclamping-nut 56 pressingupwardly against a packing-ring 5I surrounding the said drain-head asis shown in Fig. 8. The clampingnut 5I) serves to seat the upper portion of the packing-ring 5I against the adjacent under porthe flange 41 at the upper end of the drain-head 46 against the upper surface of the said lavatorybowl.

Like the drain-head 22 before referredto, the lower portion of the drain-head 46 is threaded into a threaded aperture 52 formed in the upper portion of a body 53 corresponding generally to the body I5 of the structure of Figs. l to '1, inclusive. The lower end of the tubular drainhead 46 is provided with an inwardly-turned annular iiangel 54 seating against the upper surface of a ring-like gasket 55 supported upon an inwardly-projecting annular flange 56 at the inner end of the upper aperture 52 in the body 53. At

D1 its lower end the upper aperture 52 communi- Cates with a chamber 51 in the interior of the body 53 and therefore is in communication with an aperture 58 formed in the lower portion of the said body and internally threaded for the reception of a waste-pipe 59.

Adjacent its upper end the drain-head 46 is formed with a conically-contoured stopper-seat 60 adapted to receive the similarly-contoured peripheral portion of a disc-like stopper-headBIr provided centrally with a depending stem 62 extending downwardly centrally through the interior ofthe drain-head 46 and ultimately into the chamber 51 of the body 53. The lower end of the stem 62 just referred to is provided with mediate its ends with a ball-like trunnion 65' seatedV at its inner end against. afresilient `seattion of the lavatory-bowl 48 and thus rmly seatv member 66 mounted in the laterally-offsetting neck 67 of the body 53. 'I'he outer portion of the said neck 61 is externally threaded for the reception of the internally-threaded inner portion of a substantially-tubular retaining-cap 68 which houses the major portion of the trunnion 65. The retaining-cap 68 also accommodates in its outer portion a helical spring 69 which serves to press the inner portion of the sphericallycontoured trunnion 65 into watertight seated engagement with the resilient seat-member 66, in a manner similar to that described in connection with the trunnion 36 of the structure of Figs. 1 to 7, inclusive.

At diametrically-opposite points adjacent its upper end the drain-head it is formed respectively with two overflow-receiving openings l- 1G of arcuate form in a horizontal direction as is shown especially well in Fig. 9. Bent inwardly from the upper portions of each of the side edges of each of the overflow-receiving openings TU 'IB is one of two complemental guiding-webs 'II- 'II. At each of its respective opposite ends the given one of the guiding-webs 'II-H is integrally united with the edges of the adjacent one of the two openings 'IU-i0 and has in its center portion a concave guiding-face 72 substantially conforming in curvature to the curvature of the stem 62 of the stopper-head 6l, As thus arranged the central portion of each of the guiding-webs 'Iihas its concave guidingface 72 arranged in opposition to the similar face of the other guiding-web, as is especially well shown in Figs. 9 and 10. The distance between the respective concave guiding-faces 'I2-12 of the guiding-webs 1l-ll is such as to afford a free sliding fit for the stem 62 in its vertical movement under movements imparted to it by the operating-lever 54.

The complemental guiding-webs 'll-7| not only provide accurate guiding means for the stem B2 of the stopper 6! but present but a negligible amount of obstruction to the flow of waste water downwardly through the drain-head 45 past the stopper-seat 60 therein.

The invention may be carried out in vother specific ways than those herein set forth without departing from the spirit and essential characteristics of the invention, and the present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, and all changes coming within the meaning and equivalency range of the appended claims are intended to be embraced therein.

I claim:

l. A drain-assembly including in combination: a stopper-unit comprising a stopper-head and a vertical stem depending from the said stopperhead; and a vertical tubular wrought-metal drain-head centrally receiving in its interior the stem of the said stopper-unit and having a cylindrical side-wall, the said drain-head being provided adjacent its upper end with a stopper-seat toward and away from which the stopper-head of the said stopper-unit is vertically movable, the said drain-head also having two openings in its side-wall from a margin of each of which openings an integral portion of the said side-wall is bent inwardly toward and into guiding relationship to the stem of the said stopper-unit to guide the vertical movement of the said stopper-unit and ensure the registration of the stopper-head thereof with the stopper-seat in the upper portion of the said drain-head.

2. A drain-assembly including in combination: a stopper-unit comprising a stopper-head and a vertical stem depending from the said stopperhead; and a vertical tubular wrought-metal drain-head centrally receiving in its interior the stem of the said stopper-unit and having a cylindrical side-wall, the said drain-head being provided adjacent its upper end With a stopper-seat toward and away from which the stopper-head of the said stopper-unit is vertically movable, the said drain-head also having two oppositelylocated openings in its side-wall from a marginal edge of each of which openings an integral portion of the said side-wall is bent inwardly in opposition to the other said portion and toward and into guiding relationship to the stem of the said stopper-unit to guide the vertical movement of the said stopper-unit and ensure the registration of the stopper-head thereof with the stopperseat in the upper portion of the said drain-head.

3l. A drain-assembly including in combination: a stopper-unit comprising a stopper-head and a vertical stem depending from the said stopperhead; and a vertical tubular wrought-metal drain-head centrally receiving in its interior the stem of the said stopper-unit and having a cylindrical side-wall, the said drain-head being provided adjacent its upper end with a stopperseat toward and away from which the stopperhead of the said stopper-unit is vertically movable, the said drain-head also having two openings in its side-wall from a margin of each of which openings an integral portion of the said side-wall is bent inwardly toward and into guiding relationship to the stem of the said stopperunit, the said integral inwardly-bent portions of the said side-wall being provided with an inwardly-facing concave guiding-surface engageable with the stern of the said stopper-unit to stabilize the said stem againts lateral movement in a plurality of directions.

4. A drain-assembly including in combination: a stopper-unit comprising a stopper-head and a vertical stem depending from the said stopperhead; and a vertical tubular wrought-metal drain-head centrally receiving in its interior the stem of the said stopper-unit and having a cylindrical side-wall, the said drain-head being provided adjacent its upper end with a stopperseat toward and away from which the stopperhead of the said stopper-unit is vertically movable, the said drain-head also having two oppositely-located openings in its side-wall from a marginal edge of each of which openings an integral portion of the said side-wall is bent inwardly in opposition to the other side portion and toward the stem of the said stopper-unit, each of the inner portions of the said inwardly-deflected integral portions being formed with an inwardlyfacing concave guiding-surface engageable by the stem of the said stopper-unit for stabilizing the latter against lateral movement in a plurality of directions relative to the drain-head.

ELTON A. POPE'. 

